Machine Design
In helical gears, the right hand helixes on one gear will mesh __________ helixes on the other gear.

None of these
Left hand
Right hand
Both A and B

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Machine Design
The effective stress in wire ropes during normal working is equal to the stress due to

Axial load plus stress due to bending
Axial load plus stress due to acceleration/retardation
Bending plus stress due to acceleration/retardation
Acceleration/retardation of masses plus stress due to bending

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Machine Design
Coaxing is the procedure of increasing

Metal resistance to corrosion by coating
Fatigue limit by over-stressing the metal by successively increasing loadings
Metal hardness by surface treatment
Metal strength by cycling

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